-/* +------------------------------------+
- * | Inspire Internet Relay Chat Daemon |
- * +------------------------------------+
+/*
+ * InspIRCd -- Internet Relay Chat Daemon
*
- * InspIRCd: (C) 2002-2008 InspIRCd Development Team
- * See: http://www.inspircd.org/wiki/index.php/Credits
+ * Copyright (C) 2009-2010 Daniel De Graaf <danieldg@inspircd.org>
+ * Copyright (C) 2008 Robin Burchell <robin+git@viroteck.net>
*
- * This program is free but copyrighted software; see
- * the file COPYING for details.
+ * This file is part of InspIRCd. InspIRCd is free software: you can
+ * redistribute it and/or modify it under the terms of the GNU General Public
+ * License as published by the Free Software Foundation, version 2.
*
- * ---------------------------------------------------
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
+ * details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
-/* $Core */
#include "inspircd.h"
#include "socket.h"
#include "socketengine.h"
+#ifndef _WIN32
+#include <netinet/tcp.h>
+#endif
-/* Private static member data must be initialized in this manner */
-unsigned int ListenSocket::socketcount = 0;
-sockaddr* ListenSocket::sock_us = NULL;
-sockaddr* ListenSocket::client = NULL;
-sockaddr* ListenSocket::raddr = NULL;
-
-ListenSocket::ListenSocket(InspIRCd* Instance, int port, char* addr) : ServerInstance(Instance), desc("plaintext"), bind_addr(addr), bind_port(port)
+ListenSocket::ListenSocket(ConfigTag* tag, const irc::sockets::sockaddrs& bind_to)
+ : bind_tag(tag)
+ , iohookprov(NULL, std::string())
{
- this->SetFd(irc::sockets::OpenTCPSocket(addr));
- if (this->GetFd() > -1)
+ irc::sockets::satoap(bind_to, bind_addr, bind_port);
+ bind_desc = bind_to.str();
+
+ fd = socket(bind_to.sa.sa_family, SOCK_STREAM, 0);
+
+ if (this->fd == -1)
+ return;
+
+#ifdef IPV6_V6ONLY
+ /* This OS supports IPv6 sockets that can also listen for IPv4
+ * connections. If our address is "*" or empty, enable both v4 and v6 to
+ * allow for simpler configuration on dual-stack hosts. Otherwise, if it
+ * is "::" or an IPv6 address, disable support so that an IPv4 bind will
+ * work on the port (by us or another application).
+ */
+ if (bind_to.sa.sa_family == AF_INET6)
{
- if (!Instance->BindSocket(this->fd,port,addr))
- this->fd = -1;
-#ifdef IPV6
- if ((!*addr) || (strchr(addr,':')))
- this->family = AF_INET6;
- else
+ std::string addr = tag->getString("address");
+ /* This must be >= sizeof(DWORD) on Windows */
+ const int enable = (addr.empty() || addr == "*") ? 0 : 1;
+ /* This must be before bind() */
+ setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, reinterpret_cast<const char *>(&enable), sizeof(enable));
+ // errors ignored intentionally
+ }
#endif
- this->family = AF_INET;
- Instance->SE->AddFd(this);
+
+ SocketEngine::SetReuse(fd);
+ int rv = SocketEngine::Bind(this->fd, bind_to);
+ if (rv >= 0)
+ rv = SocketEngine::Listen(this->fd, ServerInstance->Config->MaxConn);
+
+ int timeout = tag->getInt("defer", 0);
+ if (timeout && !rv)
+ {
+#if defined TCP_DEFER_ACCEPT
+ setsockopt(fd, IPPROTO_TCP, TCP_DEFER_ACCEPT, &timeout, sizeof(timeout));
+#elif defined SO_ACCEPTFILTER
+ struct accept_filter_arg afa;
+ memset(&afa, 0, sizeof(afa));
+ strcpy(afa.af_name, "dataready");
+ setsockopt(fd, SOL_SOCKET, SO_ACCEPTFILTER, &afa, sizeof(afa));
+#endif
+ }
+
+ if (rv < 0)
+ {
+ int errstore = errno;
+ SocketEngine::Shutdown(this, 2);
+ SocketEngine::Close(this);
+ this->fd = -1;
+ errno = errstore;
}
- /* Saves needless allocations */
- if (socketcount == 0)
+ else
{
- /* All instances of ListenSocket share these, so reference count it */
- ServerInstance->Logs->Log("SOCKET", DEBUG,"Allocate sockaddr structures");
- sock_us = new sockaddr[2];
- client = new sockaddr[2];
- raddr = new sockaddr[2];
+ SocketEngine::NonBlocking(this->fd);
+ SocketEngine::AddFd(this, FD_WANT_POLL_READ | FD_WANT_NO_WRITE);
+
+ this->ResetIOHookProvider();
}
- socketcount++;
}
ListenSocket::~ListenSocket()
{
if (this->GetFd() > -1)
{
- ServerInstance->SE->DelFd(this);
- ServerInstance->Logs->Log("SOCKET", DEBUG,"Shut down listener on fd %d", this->fd);
- if (ServerInstance->SE->Shutdown(this, 2) || ServerInstance->SE->Close(this))
- ServerInstance->Logs->Log("SOCKET", DEBUG,"Failed to cancel listener: %s", strerror(errno));
+ SocketEngine::DelFd(this);
+ ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "Shut down listener on fd %d", this->fd);
+ SocketEngine::Shutdown(this, 2);
+ if (SocketEngine::Close(this) != 0)
+ ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "Failed to cancel listener: %s", strerror(errno));
this->fd = -1;
}
- socketcount--;
- if (socketcount == 0)
- {
- delete[] sock_us;
- delete[] client;
- delete[] raddr;
- }
}
/* Just seperated into another func for tidiness really.. */
void ListenSocket::AcceptInternal()
{
- ServerInstance->Logs->Log("SOCKET",DEBUG,"HandleEvent for Listensoket");
- socklen_t uslen, length; // length of our port number
- int incomingSockfd;
+ irc::sockets::sockaddrs client;
+ irc::sockets::sockaddrs server;
-#ifdef IPV6
- if (this->family == AF_INET6)
- {
- uslen = sizeof(sockaddr_in6);
- length = sizeof(sockaddr_in6);
- }
- else
-#endif
- {
- uslen = sizeof(sockaddr_in);
- length = sizeof(sockaddr_in);
- }
-
- incomingSockfd = ServerInstance->SE->Accept(this, (sockaddr*)client, &length);
+ socklen_t length = sizeof(client);
+ int incomingSockfd = SocketEngine::Accept(this, &client.sa, &length);
- if (incomingSockfd < 0 ||
- ServerInstance->SE->GetSockName(this, sock_us, &uslen) == -1)
+ ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "HandleEvent for Listensocket %s nfd=%d", bind_desc.c_str(), incomingSockfd);
+ if (incomingSockfd < 0)
{
- ServerInstance->SE->Shutdown(incomingSockfd, 2);
- ServerInstance->SE->Close(incomingSockfd);
ServerInstance->stats->statsRefused++;
return;
}
+
+ socklen_t sz = sizeof(server);
+ if (getsockname(incomingSockfd, &server.sa, &sz))
+ {
+ ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "Can't get peername: %s", strerror(errno));
+ irc::sockets::aptosa(bind_addr, bind_port, server);
+ }
+
/*
* XXX -
* this is done as a safety check to keep the file descriptors within range of fd_ref_table.
* which for the time being is a physical impossibility (even the largest networks dont have more
* than about 10,000 users on ONE server!)
*/
- if (incomingSockfd >= ServerInstance->SE->GetMaxFds())
+ if (incomingSockfd >= SocketEngine::GetMaxFds())
{
- ServerInstance->Logs->Log("SOCKET", DEBUG, "Server is full");
- ServerInstance->SE->Shutdown(incomingSockfd, 2);
- ServerInstance->SE->Close(incomingSockfd);
+ ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "Server is full");
+ SocketEngine::Shutdown(incomingSockfd, 2);
+ SocketEngine::Close(incomingSockfd);
ServerInstance->stats->statsRefused++;
return;
}
- static char buf[MAXBUF];
- static char target[MAXBUF];
+ if (client.sa.sa_family == AF_INET6)
+ {
+ /*
+ * This case is the be all and end all patch to catch and nuke 4in6
+ * instead of special-casing shit all over the place and wreaking merry
+ * havoc with crap, instead, we just recreate sockaddr and strip ::ffff: prefix
+ * if it's a 4in6 IP.
+ *
+ * This is, of course, much improved over the older way of handling this
+ * (pretend it doesn't exist + hack around it -- yes, both were done!)
+ *
+ * Big, big thanks to danieldg for his work on this.
+ * -- w00t
+ */
+ static const unsigned char prefix4in6[12] = { 0,0,0,0, 0,0,0,0, 0,0,0xFF,0xFF };
+ if (!memcmp(prefix4in6, &client.in6.sin6_addr, 12))
+ {
+ // recreate as a sockaddr_in using the IPv4 IP
+ uint16_t sport = client.in6.sin6_port;
+ client.in4.sin_family = AF_INET;
+ client.in4.sin_port = sport;
+ memcpy(&client.in4.sin_addr.s_addr, client.in6.sin6_addr.s6_addr + 12, sizeof(uint32_t));
+
+ sport = server.in6.sin6_port;
+ server.in4.sin_family = AF_INET;
+ server.in4.sin_port = sport;
+ memcpy(&server.in4.sin_addr.s_addr, server.in6.sin6_addr.s6_addr + 12, sizeof(uint32_t));
+ }
+ }
- *target = *buf = '\0';
+ SocketEngine::NonBlocking(incomingSockfd);
-#ifdef IPV6
- if (this->family == AF_INET6)
+ ModResult res;
+ FIRST_MOD_RESULT(OnAcceptConnection, res, (incomingSockfd, this, &client, &server));
+ if (res == MOD_RES_PASSTHRU)
+ {
+ std::string type = bind_tag->getString("type", "clients");
+ if (type == "clients")
+ {
+ ServerInstance->Users->AddUser(incomingSockfd, this, &client, &server);
+ res = MOD_RES_ALLOW;
+ }
+ }
+ if (res == MOD_RES_ALLOW)
{
- inet_ntop(AF_INET6, &((const sockaddr_in6*)client)->sin6_addr, buf, sizeof(buf));
- socklen_t raddrsz = sizeof(sockaddr_in6);
- if (getsockname(incomingSockfd, (sockaddr*) raddr, &raddrsz) == 0)
- inet_ntop(AF_INET6, &((const sockaddr_in6*)raddr)->sin6_addr, target, sizeof(target));
- else
- ServerInstance->Logs->Log("SOCKET", DEBUG, "Can't get peername: %s", strerror(errno));
+ ServerInstance->stats->statsAccept++;
}
else
-#endif
{
- inet_ntop(AF_INET, &((const sockaddr_in*)client)->sin_addr, buf, sizeof(buf));
- socklen_t raddrsz = sizeof(sockaddr_in);
- if (getsockname(incomingSockfd, (sockaddr*) raddr, &raddrsz) == 0)
- inet_ntop(AF_INET, &((const sockaddr_in*)raddr)->sin_addr, target, sizeof(target));
- else
- ServerInstance->Logs->Log("SOCKET", DEBUG, "Can't get peername: %s", strerror(errno));
+ ServerInstance->stats->statsRefused++;
+ ServerInstance->Logs->Log("SOCKET", LOG_DEFAULT, "Refusing connection on %s - %s",
+ bind_desc.c_str(), res == MOD_RES_DENY ? "Connection refused by module" : "Module for this port not found");
+ SocketEngine::Close(incomingSockfd);
}
-
- ServerInstance->SE->NonBlocking(incomingSockfd);
- ServerInstance->stats->statsAccept++;
- this->OnAcceptReady(target, incomingSockfd, buf);
}
void ListenSocket::HandleEvent(EventType e, int err)
switch (e)
{
case EVENT_ERROR:
- ServerInstance->Logs->Log("SOCKET",DEFAULT,"ListenSocket::HandleEvent() received a socket engine error event! well shit! '%s'", strerror(err));
+ ServerInstance->Logs->Log("SOCKET", LOG_DEFAULT, "ListenSocket::HandleEvent() received a socket engine error event! well shit! '%s'", strerror(err));
break;
case EVENT_WRITE:
- ServerInstance->Logs->Log("SOCKET",DEBUG,"*** BUG *** ListenSocket::HandleEvent() got a WRITE event!!!");
+ ServerInstance->Logs->Log("SOCKET", LOG_DEBUG, "*** BUG *** ListenSocket::HandleEvent() got a WRITE event!!!");
break;
case EVENT_READ:
this->AcceptInternal();
}
}
-void ListenSocket::OnAcceptReady(const std::string &ipconnectedto, int nfd, const std::string &incomingip)
+bool ListenSocket::ResetIOHookProvider()
{
- ServerInstance->Users->AddUser(ServerInstance, nfd, bind_port, false, this->family, client, ipconnectedto);
+ std::string provname = bind_tag->getString("ssl");
+ if (!provname.empty())
+ provname.insert(0, "ssl/");
+
+ // Set the new provider name, dynref handles the rest
+ iohookprov.SetProvider(provname);
+
+ // Return true if no provider was set, or one was set and it was also found
+ return (provname.empty() || iohookprov);
}
projects / user / henk / code / inspircd.git / blobdiff